# Proposed AD FAA-2021-0459: Gulfstream Aerospace LP Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-17-14
- Products: Gulfstream Aerospace LP
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 10, 2021, 86 FR 30819
- Comments due: July 26, 2021
- Became: [AD 2021-17-14](https://openairdocs.org/ad/2021-17-14)
- Docket: FAA-2021-0459 (https://www.regulations.gov/docket/FAA-2021-0459, where comments are filed)
- Project: MCAI-2021-00129-T
- FR document: 2021-12170
- Official PDF: https://openairdocs.org/files/sha256/9f/50/9f50bb78c6b48339469614408a1efd2426558884c6eb66dd2171d05e69c30c73 (from https://www.govinfo.gov/content/pkg/FR-2021-06-10/pdf/2021-12170.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/06/10/2021-12170/airworthiness-directives-gulfstream-aerospace-lp-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/AEFB2605F26AC18F862586F000770F29.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0459

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for

((Page 30820))

certain Gulfstream Aerospace LP Model Gulfstream G280 airplanes. This proposed AD was prompted by a report that during full-scale fatigue testing, a crack was found in the area of the attachment of the wing rib 0 to the front spar. This proposed AD would require non-destructive testing on the forward (front) spar vertical stiffener and rib 0 for any cracking, installation of a doubler to the forward (front) spar and rib 0 attachment, and repair if necessary, as specified in a Civil Aviation Authority of Israel (CAAI) AD, which is proposed for incorporation by reference. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jun 10, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-12170, comments due Jul 26, 2021 (https://www.federalregister.gov/documents/2021/06/10/2021-12170/airworthiness-directives-gulfstream-aerospace-lp-airplanes)

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